On Thu, 23 Aug 2007, Nick Piggin wrote:
>
> Also, FWIW, there are some advantages of deferring the mmiowb thingy
> until the point of unlock.
And that is exactly what ppc64 does.
But you're missing a big point: for 99.9% of all hardware, mmiowb() is a
total no-op. So when you talk about "advantages", you're not talking about
any *real* advantage, are you?
Linus
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